Electrolytic condenser



Feb. 18, 1930.

H. R. vm DEVENTER 1,747,915

ELECTROLYTIC CONDENSER Filed May 17, 1924 INVE TOR Patented Feb. 18, 1930 UNITED: STATES PATENT OFFICE HARRY R. VAN DEVENTER, OF NEW YORK, N. Y., 'ASSIGNOR TO D'UBILIER CONDENSER CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE ELECTROLYTIC CONDENSER Application filed May 17,

I have invented improvements in electrical condensers; especially electrolytic condensers, the electrodes of which are of conductive material immersed in a liquid having the necessary properties.

An object of this invention is to provide an electrolytic condenser that is quite simple in design-and can be built for general use, and of such construction that heating in operation can be prevented. Preferably the electrodes are hollow so that a coolin agent can be circulated through them, and the temperature of the condenser thus easily controlled.

Other objects and advantages of this invention will be apparent from the following description and the novel features thereof are precisely defined in the appended claims. But the disclosure is of course illustrative only and I reserve theright to make changes in structural details without departing from the principle which governs the invention.

On the drawing The figure is a view part1 in sectlon s h0 w ing a condenser in which t e characteristics of my invention are embodied.

Briefly stated, I employ in practice two or more coils of pipe, of difi'erent polarity, in a suitable electrolyte. The pipes are electrically insulated from one another, and connected to the opposite terminals of an electric circuit. Through the pipes a cooling medium, such as oil or some other agent, is forced by suitable pum ing mechanism.

The coils of pipe are s own at 1, 2, 3 and 4.

Coils 1 and 3, for example, are of one polarity and coils 2 and 4 of the opposite polarity.

All the coils are concentric and each comprises several turns or layers, one above the other, in a tank or container 5 holding the electrolyte 6. This electrolyte is deep enough to submerge all the 6011s, and the tank may be provided with a suitable refractory or chemically inert lining 7 to resist the action of the electrolytic liquid and thus prevent corrosion. Each of the coils 1,

2, 3 and 4, which are of course of an electrically conductive substance, such as metal,

may have an insulating coating 8 on its.out

- side over the entire surface with which the 1924. Serial No. 714,139.

their upper ends by a section of pipe 13. They are wound downward towards the bottom of the tank 5, and their lower ends are united by vertical pieces of piping 14 to a common outlet pipe 15. The ends of the pipes 13 and 15 are secured to the inner ends of sleeves or couplings 16, of insulation, made fast in openings in the side of the'tank near the top. The outer ends of the sleeves 16 are joined by pipes or conduits 17 and 18 leading to the opposite ends of a coil 19 in a cooling tank 20. In the line of the pipe 17 may bea pump 21 to maintain a circulation of a cooling liquid through the coils 1, 3 and 19, and the tank 20 may have an inlet pipe 22 and an outlet pipe 23 so that there may be a continuous flow of water through the tank 20 over the coil 19. Thus, when the cooling agent from'the coils 1 and 3 in the tank 5 reaches the coil 19, all the heat removed by this agent from the coils 1 and 3 will be carried away, by the water tgigwing over'the coil 19 and through the tank A pipe 24 unites the tops of the other two coils 2 and t in the tank 5. These twocoils are also wound downward and pipes 25 join their lower ends to a common outlet pipe 26. The pipes 24 and 26 are also aflixedcat their ends into insulating couplings 16, similar to the couplings already mentioned in the side of the tank 5 nearthe top; and the pipe 24: may be connected to the pipe 17. If desired a double' coupling 28 may be employed to unite to the pipe 17 the two sleeves 16 receivmg the ends of the pipes 13 and 24, and a pipe 27 may be used to connect the couplin 16 receiving the pipe 26, to the same end oi: the coil 19 as the pipe 18. As shown the two pipes 18 and 27 may be united to the coil 19 by a single coupling similar to the coupling 28. 4

The coils 1 and 3 thus constitute hollow electrodes, and so do the coils 2 and 4; the coil 3 being between the coils 2 and 4; so that the electrodes are in alternation. To the pipe 13 may be connected the terminal 29 of an electric circuit; and the oppositc'terminal 30 of the circuit may be joined to the pipe 2i. Then the coils 1 and 3, 2 and 4, are of opposite polarity. The two sets of coils are insulated from each other and the tank 5 by their coatings 8 and the insulating couplings 16, and in operation the circulating member 21 with the cooling apparatus comprising the tank 20 and coil 19 constitute means capable of maintaining an ample flow of cooling agent through all of the electrode coils 1, 2, 3, and 4 to keep the temperature of the condenser within the desired limits.

In practice binding posts may be mounted in any convenient fashion on the tank with leads to the coils 1 and 3, 2 and 4, inside.

Coils 1 and 3 are in multiple with each other andso are coils 2 and 4, while the two groups orsets ofelectrode coils 1 and 3, 2 and 4, are connected in series with each other.

Having described my invention, what I believe to be new and desire to secure and protect by Letters Patent of the United States 1. A condenser comprising a container for a fluid, a coil of pipe comprising a number of turns each spaced axially from the others in said container and constituting an electrode, a second coil of pipe comprising a number of turns each spaced axially from the others and concentric with the first .coil, the second coil constituting another electrode, said electrode bein of opposite polarity, and means for circ ating 'a cooling agent through the pipes.

2. A condenser comprising a container for a fluid, a pair ofcoils of pipe therein, said coils being concentric, and each consisting of a number of turns each spaced axially from the others, and connected in multiple, a

second pair of coils in said container, each pair consisting of a number of turns one spaced axially from the other, the second pair of coils also being connected in multiple, the

coils being arranged in alternation, so that one coil of each pair will lie between the two coils of the other pair, and means for circulating, a cooling agent through the coils.

3. A condenser comprising a container for a fluid, a coil of pipe comprising a number of turns each spaced axially from the others in said pipe, and constituting an electrode, a second coil of pipe comprising a number of turns each spaced axially from the others and concentric with the first coil, the second coil constituting another electrode, said electrodes being of opposite polarity, and means for circulating a cooling agent. through the mounted in said container.

others, and connected in multiple, second pair of coils in said container, each pair conv sisting of a number of turns each spaced axially from the others,the second pair of coils also being connected in multiple, the

coils being arranged in alternation, so that 7 one coil of each pair will lie between the two coils of the other pair, and meansfor circulating a cooling agent through the coils, said coils each consisting ofelectrically conductive material, having an exterior non-conductive coating.

5. An electrical condenser comprising a container for a fluid, a pair of coils therein which are concentric with each other and are joined in multiple, each coil consisting of a number of layers each spaced am'ally from the others, a second pair of coils joined in multiple and each consisting of a number of layers each spaced axiall from the others, the coils being arranged in alternation, so that one coil of each pair will be between the coils of the other pair, the two pairs of coils being. of opposite polarity and consisting of electrically conductive material, with an outside non-conductive coating thereon,

cooling means outside of the tank, the coils having one end connected to one end of the cooling means, and having their op osite ends also united to the other end of sai cooling means, and a member associated with said cooling means for maintaining the circulation of a cooling agent through said means and said coils.

6. A condenser comprising a container for a fluid, a pair of concentric coils in said container, each coil consistingof a number of layers each spaced axially from the others, a second pair of coils in said container, each consisting of a number of layers each spaced axially from the others, the coils being in alternation so that one coil of each pair lies between the coils of the other pair, said coils belng of conductive material, with an outside non-conductive coating thereon, the coils of each pair being connected in multiple, cooling and circulating means for maintaining the flow of a cooling agent through said" coils,

insulating bushings through which the coils can be placed in communication at one exand circulatm tremity with said coolin means, and insulating ushings throng which the opposite end of thecoils can be placed in communication with coolin and circulating means, said bushings ing 7 An electrolytic condenser comprising a container for a liquid, a pair of electrodes m1 ".130

mersed in said liquid, said electrodes being of opposite polarity and hollow so that a cooling agent can be passed through the same, pipes outside said container to pass the cooling agent therethrough, and insulating bushings mounted in a wall of the container to which said electrodes are connected, and held in fixed position by said container, said insulating bushings also serving to insulate the ends of the hollow electrodes from the ends of said pipes.

8. An electrolytic condenser as specified in claim 7 in which said bushings aid in supporting said hollow electrodes.

In testimony whereof I aflix my signature.

HARRY R. VAN DEVENTER. 

